package com.ny.demo2;

public class Keyboard implements USB{
    @Override
    public void open() {
        System.out.println("USB键盘开启");
    }

    @Override
    public void close() {
        System.out.println("USB键盘关闭");
    }
    public void strike(){
        System.out.println("键盘敲击");
    }
}
